Tread portion of an automobile tire



FIG. 1 is a perspective view of a tread portion of an automobile tire, it being understood that the tread pattern repeats uniformly thoughout the circumference of the tire;

FIG. 2 is a front elevational view thereof, the top plan view and a bottom plan view are identical to the front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is an enlarged fragmentary front view thereof; and,

FIG. 7 is a cross-sectional view thereof taken along the line 7—7 in FIG. 6.

The broken line showing of a tire sidewall and inner bead is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a tread portion of an automobile tire, as shown and described. 